Mechanical Seals

Lahor Engineering Ltd. is the exclusive distributor of FLOWSERVE, the world’s largest manufacturer of mechanical seals. A Flowserve mechanical seal provides a solution to sealing challenges for any pump in your plant, process facilities, chemical plants, petrochemical plants, fuel and energy facilities, mineral processing, fertilizers, and pesticide production. These mechanical seals offer reliable sealing solutions for pumps, compressors, blowers, agitators, mixers, reactors, dryers, centrifuges, chemical plants, process industry facilities, ships, submarines, merchant fleets, the navy, and the aerospace industry.

Mechanical seals are also suitable for HVAC systems, including both compressors and cooling water or recirculation pumps for cooling towers and heat exchangers.

Used mechanical seals can be refurbished at the Mechanical Seal Refurbishment Center (a fast-service center for all types of seals) at Lahor Engineering Ltd., certified by Flowserve. Lahor Engineering’s service engineers have undergone in-depth training at Flowserve manufacturing plants and their refurbishment centers.

Lahor Engineering also organizes seminars and training courses for maintenance personnel and maintenance engineers.

June 2023: Lahor Engineering conducted a comprehensive training session on Flowserve mechanical seals. The training took place at a Flowserve mechanical seal factory in Etten-Leur, Netherlands, with Lahor Engineering clients in attendance.
January 2015: Lahor Engineering conducted two professional training sessions for the Bazan Group and Paz Ashdod Refinery on seals and sealing solutions. The training took place in Lahor Engineering’s training classroom and was delivered by a Flowserve applications expert.

Mechanical Seal Refurbishment

Mechanical seals are components designed to prevent leakage of liquids by using specialized parts with specific properties: spring, frame, rotary, rotating ring, and stationary ring. In total, these seals consist of seven parts, all of which are round and adjustable, replaceable, and regulatable. To maintain the seal and ensure it performs as expected over time, regular maintenance is required. It is crucial that these procedures are performed by a professional and experienced company certified by the seal manufacturer, with the knowledge, equipment, and expertise in standards, as well as a deep understanding of the materials and components of the seals, to ensure optimal refurbishment.

Mechanical Seals for Pumps

To seal a pump’s rotating shaft, mechanical seals are required that allow the shaft to rotate while maintaining a seal. The seals work on the principle of two polished sliding surfaces rotating against each other. The seal has two main parts: the rotating part attached to the shaft, and the stationary part positioned at the shaft’s entry point into the fluid. The sealing surfaces can be made from various materials, commonly including silicone, stainless steel, carbon, and others. The material selection is adapted to the specific application of each seal.

Who Can Replace Mechanical Seals for Pumps?

Installing mechanical seals on pumps is complex. To perform this work correctly, one must be familiar with the different systems, possess technical knowledge, professional skills, and the appropriate equipment and tools. Therefore, in addition to selecting the correct mechanical seals and ensuring their maintenance, it is essential to pay attention to the replacement process. The person performing the installation must know how to avoid mistakes during assembly. Adhering to these parameters ensures the best possible performance and longevity of the mechanical seals.

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So What Is the Role of Mechanical Seals?

Mechanical seals are critical components in pumps, particularly in applications where a rotating shaft enters a chamber containing liquid. Their primary purpose is to prevent fluid from leaking out along the shaft. Since leaked fluids may pose safety hazards or cause environmental contamination, mechanical seals play a vital role in protecting both equipment and surroundings. There are various types of mechanical seals, and it is important to be familiar with them already at the seal selection stage. Mechanical seal refurbishment typically becomes relevant at a later stage, when economic considerations justify refurbishing an existing seal and make it a more cost-effective option compared to purchasing a new, expensive mechanical seal.

Which Mechanical Seals Are Suitable for Harsh Applications?

Mechanical seals selected for harsh applications must allow smooth, uninterrupted shaft movement and resist clogging. Do not compromise on seals that offer high durability and resistance to common failure modes, and that are based on advanced technologies. When required, custom-designed mechanical seals can be installed for particularly demanding sealing applications. The engineers at Lahor Engineering Ltd. are experienced in providing high-quality, tailor-made sealing solutions to ensure complete sealing for all types of leakage.

How Are Mechanical Seals Reconditioned?

Mechanical seal refurbishment includes disassembly, assessment of components that require replacement, thorough cleaning of all seal parts, lapping and polishing of the sealing faces, reassembly of all components, and functional testing on a dedicated test rig to verify the integrity and performance of the refurbished seal. A failure analysis report is prepared when required.

Refurbishment of Cartridge-Type Mechanical Seals

Cartridge seals are engineered by leading specialists to ensure maximum sealing performance. Extensive experience combined with advanced equipment has resulted in high-quality mechanical seals that set a new industry standard. Mechanical seal refurbishment provides a fast and cost-effective solution for maintaining efficient, reliable, and economical operation. Please note that refurbishing mechanical seals requires specialized equipment, in-depth expertise, and proven experience—available only at mechanical seal repair centers certified by seal manufacturers.

How Can You Reduce Costs When Working with Mechanical Seals?

Choosing high-quality, durable seals is the first step toward reducing maintenance expenses. Refurbishing mechanical seals instead of full replacement significantly lowers the cost of purchasing new seals. At the end of the refurbishment process, the customer receives a seal that performs like new, with a 12-month warranty. Split mechanical seals can be installed without dismantling the pump. By selecting split seals, you can significantly reduce maintenance time and overall operating costs.

Mechanical Seal Refurbishment by an Experienced Company

Mechanical seals are designed to provide reliable sealing for pumps and fluid-handling equipment. They must be dependable, easy to install, efficient, durable, safe to operate, and capable of repair or refurbishment when required. Properly selected mechanical seals can significantly improve performance while successfully coping with demanding environmental conditions. The ability to refurbish mechanical seals is crucial for reducing the costs associated with production downtime. In addition, a structured refurbishment schedule can shorten lead times compared to sourcing a new seal. Lahor Engineering Ltd. provides advanced maintenance services for industrial plants and institutions, including chemical cleaning, high-pressure water cleaning, industrial protective coatings, and more. Thanks to Lahor Engineering’s extensive experience and technical expertise, you can maximize the performance and lifespan of your mechanical seals.

What Can Be Done with Old Mechanical Seals?

Before rushing to discard old mechanical seals, it is important to know that they can – and should – be refurbished at the mechanical seal service and refurbishment center of Lahor Engineering Ltd. The engineering team at Lahor Engineering has undergone comprehensive training in the refurbishment of mechanical seals for pumps. After a full refurbishment process and proper performance testing, the refurbished seal can be returned to service safely and reliably.

Proper Maintenance of Mechanical Seals

The primary role of mechanical seals is to prevent leakage. In order to extend the service life of the seals, it is essential to perform routine maintenance in accordance with the recommendations of a qualified professional who is familiar with your systems. Maintenance activities should be carried out by a professional company authorized by the seal manufacturer. In-depth knowledge of all seal components and material properties is critical for optimal maintenance. Lahor Engineering Ltd. specializes in the supply, maintenance, and refurbishment of mechanical seals. Contact us to schedule a consultation meeting and receive additional information.

How Do You Choose Mechanical Seals for Pumps?

Consulting with a professional is essential for the accurate selection of mechanical seals for pumps. Lahor Engineering Ltd. is recognized as a leading company in the field and supplies high-quality mechanical seals for pumps in a wide variety of types and configurations. All you need to do to purchase these seals is contact Lahor Engineering’s professional team and place an order. The seals are suitable for pumps used in chemical plants, fuel and energy industries, pesticide and fertilizer manufacturing plants, and more. They can be installed in pumps, mixers, blowers, compressors, chemical facilities, marine vessels, aircraft equipment, and additional applications. In addition, mechanical seals are also suitable for air-conditioning and cooling systems.

Where Can Mechanical Seals for Pumps Be Purchased?

Mechanical seals for pumps should be purchased from a reliable and professional company that specializes in supplying mechanical seals for all types of pumps. Selecting the correct seals is essential for proper pump operation, as sealing the rotating shaft requires seals that allow controlled shaft movement. Mechanical seals consist of two main components: a stationary part and a rotating part. The rotating component is attached to the shaft and rotates together with it, while the stationary component is positioned at the shaft entry point. Lahor Engineering is able to accurately match mechanical seals to each specific pump, ensuring leak prevention and reliable operation of the entire system. Contact us today for professional consultation and ordering of mechanical seals with our experienced engineering team.

The Right Place for Mechanical Seals

If you are looking for mechanical seals, there is no reason to compromise on anything less than the most suitable and highest-quality solutions available. This is exactly where Lahor Engineering comes into the picture, providing a professional and reliable response to every requirement and specification. The experienced company, established in 1979 and well known for its strong reputation, has been delivering a wide range of industrial services and products for decades. These include hydrodynamic cleaning, chemical cleaning, industrial epoxy coatings, mechanical seal refurbishment, elastic couplings, synthetic oils, mechanical seals for pumps, and more. For further details about the company, its services, and the mechanical seals it offers, you are invited to contact us today. Our professional team will be happy to provide all the information you need.